Shareholders' Deficit - Additional Information (Detail) (USD $)
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0 Months Ended |
12 Months Ended |
0 Months Ended |
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Nov. 01, 2012
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Oct. 31, 2012
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Mar. 09, 2012
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Feb. 28, 2012
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Dec. 31, 2014
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Dec. 31, 2013
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Dec. 31, 2012
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May 14, 2014
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Nov. 10, 2014
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May 28, 2014
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May 27, 2014
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Oct. 30, 2013
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Class of Stock [Line Items] |
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Common stock issued |
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124,129,000us-gaap_CommonStockSharesIssued |
129,652,000us-gaap_CommonStockSharesIssued |
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Proceeds from issue of common stock through IPO |
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$ 525,000,000us-gaap_ProceedsFromIssuanceOfCommonStock |
$ 3,116,000us-gaap_ProceedsFromIssuanceOfCommonStock |
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Preferred stock, authorized |
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1,000,000us-gaap_PreferredStockSharesAuthorized |
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Preferred stock, par value |
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$ 0.01us-gaap_PreferredStockParOrStatedValuePerShare |
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Preferred stock, shares issued |
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0us-gaap_PreferredStockSharesIssued |
0us-gaap_PreferredStockSharesIssued |
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Equity repurchase program authorized amount |
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125,000,000us-gaap_StockRepurchaseProgramAuthorizedAmount1 |
Repurchases under the equity repurchase program |
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65,500,000us-gaap_StockRepurchasedAndRetiredDuringPeriodValue |
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Repurchase of common stock, Shares |
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7,591,175us-gaap_StockRepurchasedDuringPeriodShares |
153,223us-gaap_StockRepurchasedDuringPeriodShares |
508,656us-gaap_StockRepurchasedDuringPeriodShares |
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Repurchase of common stock, value |
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415,131,000us-gaap_StockRepurchasedDuringPeriodValue |
6,434,000us-gaap_StockRepurchasedDuringPeriodValue |
13,363,000us-gaap_StockRepurchasedDuringPeriodValue |
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Common stock repurchased, average share price |
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$ 42.01q_ShareRepurchasesPricePaidPerShare |
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Credit facility amount used to fund repurchase |
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0us-gaap_LineOfCredit |
0us-gaap_LineOfCredit |
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Dividend declared per share |
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$ 2.09us-gaap_CommonStockDividendsPerShareCashPaid |
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$ 2.82us-gaap_CommonStockDividendsPerShareCashPaid |
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Dividend, date declared |
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2012-10 |
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2012-02 |
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Dividend, date of record |
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Oct. 24, 2012 |
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Feb. 29, 2012 |
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Dividend, date to be paid |
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Nov. 01, 2012 |
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Mar. 29, 2012 |
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Total dividend paid |
241,700,000us-gaap_Dividends |
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326,100,000us-gaap_Dividends |
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Revolving credit facility [Member] |
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Class of Stock [Line Items] |
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Credit facility amount used to fund repurchase |
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150,000,000us-gaap_LineOfCredit / us-gaap_CreditFacilityAxis = us-gaap_RevolvingCreditFacilityMember |
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IPO [Member] |
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Class of Stock [Line Items] |
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Common stock price |
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$ 40.00us-gaap_SharePrice / us-gaap_SubsidiarySaleOfStockAxis = us-gaap_IPOMember |
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Common stock issued |
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13,125,000us-gaap_CommonStockSharesIssued / us-gaap_SubsidiarySaleOfStockAxis = us-gaap_IPOMember |
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Proceeds from issue of common stock through IPO |
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489,500,000us-gaap_ProceedsFromIssuanceOfCommonStock / us-gaap_SubsidiarySaleOfStockAxis = us-gaap_IPOMember |
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Selling Shareholders [Member] | IPO [Member] |
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Class of Stock [Line Items] |
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Sale of common stock |
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14,111,841q_CommonStockSharesOfferedAndSoldByShareholders / us-gaap_StatementEquityComponentsAxis = q_SellingShareholdersMember / us-gaap_SubsidiarySaleOfStockAxis = us-gaap_IPOMember |
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Proceeds from issue of common stock through IPO |
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0us-gaap_ProceedsFromIssuanceOfCommonStock / us-gaap_StatementEquityComponentsAxis = q_SellingShareholdersMember / us-gaap_SubsidiarySaleOfStockAxis = us-gaap_IPOMember |
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Selling Shareholders [Member] | IPO [Member] | Underwriters Option [Member] |
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Class of Stock [Line Items] |
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Shares offered and sold by selling shareholders pursuant to the full exercise of the underwriters' option to purchase additional shares |
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3,552,631q_CommonStockSharesOfferedAndSoldBySellingShareholders / us-gaap_OptionIndexedToIssuersEquityTypeAxis = q_UnderwritersOptionMember / us-gaap_StatementEquityComponentsAxis = q_SellingShareholdersMember / us-gaap_SubsidiarySaleOfStockAxis = us-gaap_IPOMember |
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Stock Options [Member] |
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Class of Stock [Line Items] |
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Equity repurchased -vested in-the-money employee stock options, shares |
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2,000,000q_RepurchaseOfVestedInMoneyStockOptions / us-gaap_StatementEquityComponentsAxis = us-gaap_EmployeeStockOptionMember |
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Equity repurchased -vested in-the-money employee stock options, value |
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59,100,000q_RepurchaseOfVestedInMoneyStockOptionsValue / us-gaap_StatementEquityComponentsAxis = us-gaap_EmployeeStockOptionMember |
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Repurchase vested in-the-money employee stock options, average market price |
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$ 43.42us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardPerShareWeightedAveragePriceOfSharesPurchased / us-gaap_StatementEquityComponentsAxis = us-gaap_EmployeeStockOptionMember |
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Repurchase of vested in-the-money employee stock options, average exercise price per option |
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$ 13.74us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice / us-gaap_StatementEquityComponentsAxis = us-gaap_EmployeeStockOptionMember |
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Other Equity Repurchases [Member] |
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Class of Stock [Line Items] |
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Repurchase of common stock, Shares |
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4,303,666us-gaap_StockRepurchasedDuringPeriodShares / us-gaap_ShareRepurchaseProgramAxis = q_OtherEquityRepurchasesMember |
3,287,209us-gaap_StockRepurchasedDuringPeriodShares / us-gaap_ShareRepurchaseProgramAxis = q_OtherEquityRepurchasesMember |
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Repurchase of common stock, value |
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250,000,000us-gaap_StockRepurchasedDuringPeriodValue / us-gaap_ShareRepurchaseProgramAxis = q_OtherEquityRepurchasesMember |
165,100,000us-gaap_StockRepurchasedDuringPeriodValue / us-gaap_ShareRepurchaseProgramAxis = q_OtherEquityRepurchasesMember |
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Repurchase of common stock, share price |
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$ 58.09q_StockRepurchasedDuringPeriodPerShare / us-gaap_ShareRepurchaseProgramAxis = q_OtherEquityRepurchasesMember |
$ 50.23q_StockRepurchasedDuringPeriodPerShare / us-gaap_ShareRepurchaseProgramAxis = q_OtherEquityRepurchasesMember |
$ 51.26q_StockRepurchasedDuringPeriodPerShare / us-gaap_ShareRepurchaseProgramAxis = q_OtherEquityRepurchasesMember |
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Repurchase price per share percentage |
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98.00%q_PercentageOfRepurchasePriceToCurrentStockPrice / us-gaap_ShareRepurchaseProgramAxis = q_OtherEquityRepurchasesMember |
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Other Equity Repurchases [Member] | Revolving credit facility [Member] |
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Class of Stock [Line Items] |
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Credit facility amount used to fund repurchase |
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150,000,000us-gaap_LineOfCredit / us-gaap_CreditFacilityAxis = us-gaap_RevolvingCreditFacilityMember / us-gaap_ShareRepurchaseProgramAxis = q_OtherEquityRepurchasesMember |
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Share Repurchase Program [Member] |
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Class of Stock [Line Items] |
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Repurchase of common stock, Shares |
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300us-gaap_StockRepurchasedDuringPeriodShares / us-gaap_ShareRepurchaseProgramAxis = q_ShareRepurchaseProgramMember |
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Repurchase of common stock, value |
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14,000us-gaap_StockRepurchasedDuringPeriodValue / us-gaap_ShareRepurchaseProgramAxis = q_ShareRepurchaseProgramMember |
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Repurchase of common stock, share price |
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$ 47.51q_StockRepurchasedDuringPeriodPerShare / us-gaap_ShareRepurchaseProgramAxis = q_ShareRepurchaseProgramMember |
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Equity available for repurchase under the repurchase program |
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$ 59,500,000us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1 / us-gaap_ShareRepurchaseProgramAxis = q_ShareRepurchaseProgramMember |
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